"Dad's Stamp Collection"

Let me start by saying I know NOTHING about stamp collecting or values. I have read in multiple places how difficult it is to access a collection from a web forum, and that most of these "hand me down" hobby collections have little value...well, I have been given this stamp book that belonged to my dad. The copyright date is 1952, so I'm assuming that's when he collected, although there are stamps MUCH older in the book. There appear to be a lot of WW2 and earlier period stamps from all countries.

The book is around 350 pages thick and covers the "world" in stamps. There are hundreds of stamps. Most look postmarked. Extensive lot of US stamps, but also stamps from around the world. Germany, Italy, England, Portugal, The Vatican, Netherlands, France, Japan, etc. etc.

I have included pictures of the first four pages just to give a little snapshot. I can certainly take pics of or look for certain stamps if there's something I need to be looking for as significant. Or something you have a specific interest in.

Thanks for any input in advance.

Greg